I need to find a thin layer of ice that has condensed?

go north :-)

or...

Put 1/3 cup of hot water in the freezer with a piece of plastic over it. The warm moist air will rise and condense on the plastic lid and freeze there.

To find a thin layer of ice that has condensed, you have a couple of options.

Option 1: Go north. In colder regions, especially during winter, you are more likely to find thin layers of ice that have condensed on various surfaces, such as the ground, windows, or vegetation. This condensation occurs when the moisture in the air freezes upon contact with these surfaces.

Option 2: Create your own thin layer of condensed ice. You can do this by following these steps:
1. Take 1/3 cup of hot water.
2. Place the hot water in a small container or cup.
3. Cover the container with a piece of plastic, making sure to secure the edges.
4. Put the container with the water and plastic lid in the freezer.
5. Allow the temperature to drop in the freezer, causing the warm moist air from the hot water to rise and come into contact with the plastic lid.
6. The warm moist air will condense and freeze on the plastic lid, creating a thin layer of ice.

Please note that when attempting this method, it's important to handle hot water carefully to avoid burns and ensure you take necessary safety precautions while using the freezer.

By either going to a colder location or creating your own condensed ice, you should be able to find a thin layer of ice that has condensed.